Gap sharing for RLM in NR

ABSTRACT

An apparatus and a method are provided, by which a measurement gap sharing scheme is generated by sharing measurement gaps between radio link monitoring measurement, intra-frequency measurement and inter-frequency measurement based on configurations of radio link monitoring reference signals for radio link monitoring and synchronization signal blocks and/or other reference signals used for intra-frequency measurements; measurements including the radio link monitoring measurement, the intra-frequency measurement and inter-frequency measurement are performed according to the measurement gap sharing scheme, and the measurement gap sharing scheme between radio link monitoring measurement, intra-frequency measurement and inter-frequency measurement is changed based on the radio link quality of a serving cell.

RELATED APPLICATIONS

This is a continuation patent application of U.S. application Ser. No.16/764,499, filed May 15, 2020, entitled “GAP SHARING FOR RLM IN NR”which is a national stage entry of International Application No.PCT/CN2017/111628, filed Nov. 17, 2017, entitled “GAP SHARING FOR RLM INNR”, both of which are hereby incorporated by reference in theirentireties.

FIELD OF THE INVENTION

The present invention relates to an apparatus, a method and a computerprogram product by which gap sharing for radio link monitoring (RLM) inNR (New Radio) is enabled.

RELATED BACKGROUND ART

The following meanings for the abbreviations used in this specificationapply:

3GPP 3rd Generation Partnership Project

BW Bandwidth

BWP Bandwidth part

CGI Cell global identifier

CRS Common reference signal

CSI-RS Channel state information reference signal

DRX Discontinuous reception

E-UTRA Evolved universal terrestrial radio access

L1 Layer 1

L3 Layer 3

LTE Long Term Evolution (4G)

NR New Radio

PBCH Physical broadcast channel

PCell Primary cell

PSCell Primary SCell

PSS Primary synchronization signal

RLM Radio link monitoring

RRC Radio resource control

RRM Radio resource management

SCell Secondary cell

SSB Synchronization signal block

SSS Secondary synchronization signal

UE User equipment

Embodiments of the present invention, although not limited to this,relate to New Radio (NR). Currently, RAN4 is discussing RLM requirementsfor NR. As RAN1 agreed, RLM in NR can be based on SSB or CSI-RS. In thepresent application, it is focused on SSB based RLM as UE compliant toR15 early drop (i.e. UE implemented based on December 17 version of R15NR spec) can only support RLM based on SSB.

In RAN4#84bis, RAN4 discussed if UE may need measurement gaps to performRLM and if corresponding requirement should be defined. As UE may beconfigured to work in a bandwidth part (BWP) that may not contain theSSB for RLM, it is common view in RAN4 that gaps are needed undercertain network configurations, and the UE requirements (e.g. evaluationtime for UE to detect the link quality changes) are needed.

NR RLM is in high level similar to LTE RLM. In particular, the UE willmonitor the link quality in L1, and if the link quality is below acertain threshold (Qout), L1 will indicate out-of-sync to L3. A timerwould then be started on L3 (in LTE T310) to allow link recovery, i.e.if UE monitors the link quality to be above another threshold (Qin)before the timer expires, UE will consider the link as recovered and goback to normal mode, otherwise (if timer expires), RLF and predefinedactions e.g. reestablishment will be triggered.

Using measurement gap for RLM is new issue in NR as in LTE the RLM isbased on CRS which is transmitted across the whole cell BW (so UE doesnot to re-tune to monitor CRS). The issue is further complicated by thefact that intra-frequency RRM measurement in NR may also rely on gapsfor the same reason, e.g. UE may be configured to work in a bandwidthpart (BWP) that may not contain the SSB for intra-frequency measurement.

SUMMARY OF THE INVENTION

Embodiments of the present invention address this situation and aim toenable RLM measurements of a UE in such a scenario.

According to a first aspect of the present invention an apparatus isprovided which comprises at least one processor, at least one memoryincluding computer program code, and the at least one processor, withthe at least one memory and the computer program code, being arranged tocause the apparatus to at least generate a measurement gap sharingscheme by sharing measurement gaps between radio link monitoringmeasurement, intra-frequency measurement and inter-frequency measurementbased on configurations of radio link monitoring reference signals forradio link monitoring and synchronization signal blocks and/or otherreference signals used for intra-frequency measurements, performmeasurements including the radio link monitoring measurement, theintra-frequency measurement and inter-frequency measurement according tothe measurement gap sharing scheme, and change the measurement gapsharing scheme between radio link monitoring measurement,intra-frequency measurement and inter-frequency measurement based on theradio link quality of a serving cell.

According to a second aspect of the present invention, a method isprovided which comprises:

-   -   generating a measurement gap sharing scheme by sharing        measurement gaps between radio link monitoring measurement,        intra-frequency measurement and inter-frequency measurement        based on configurations of radio link monitoring reference        signals for radio link monitoring and synchronization signal        blocks and/or other reference signals used for intra-frequency        measurements,    -   performing measurements including the radio link monitoring        measurement, the intra-frequency measurement and inter-frequency        measurement according to the measurement gap sharing scheme, and    -   changing the measurement gap sharing scheme between radio link        monitoring measurement, intra-frequency measurement and        inter-frequency measurement based on the radio link quality of a        serving cell.

The first aspect and the second aspect may be modified as follows:

For example, the measurement gap sharing scheme may be generated suchthat the measurement gaps shared by the radio link monitoring andintra-frequency measurements are not used by the inter-frequencymeasurement.

The measurement gap sharing scheme may be generated such that the samemeasurement gaps are used for the radio link monitoring measurement andthe intra-frequency measurement if the radio link monitoring referencesignals for the radio link monitoring and synchronization signal blockand/or other reference signal for intra-frequency measurements are onthe same carrier frequency.

Moreover, same measurement requirements may be applied for both of theradio link monitoring measurement and the intra-frequency measurement.

The measurement gap sharing scheme may be generated such that the radiolink monitoring measurement and the intra-frequency measurement sharemeasurement gaps not used for the inter-frequency measurement if theradio link monitoring reference signals for radio link monitoring andsynchronization signal block and/or other reference signal forintra-frequency measurement are on different carrier frequencies.

The number of gaps used for radio link monitoring measurement may beincreased in case it is detected that the link quality is notsufficient.

The number of gaps to be used for radio link monitoring measurement maybe increased to a maximum allowed number of gaps for intra-frequencymeasurement in case it is detected that the link quality is notsufficient.

The gap sharing may be canceled and all the gaps may be used for radiolink monitoring in case it is detected that the link quality is notsufficient.

It may be reported to the network that it has been detected that thatthe link quality is not sufficient, and that the measurement gap sharingscheme has been changed.

It may be detected that the link quality is not sufficient bydetermining whether a link quality is below a certain threshold.

Furthermore, when, after the measurement gap scheme has been changed dueto a low radio link quality it is detected that the radio link qualityis recovered, it may be returned to the measurement gap scheme which wasapplied before detecting the low radio link quality.

A change of the gap sharing scheme when radio link quality changes maybe network configurable.

According to a third aspect of the present invention a computer programproduct is provided which comprises code means for performing a methodaccording to the second aspect and/or its modifications when run on aprocessing means or module. The computer program product may be embodiedon a computer-readable medium, and/or the computer program product maybe directly loadable into the internal memory of the computer and/ortransmittable via a network by means of at least one of upload, downloadand push procedures.

According to a fourth aspect of the present invention an apparatus isprovided which comprises

-   -   means for generating a measurement gap sharing scheme by sharing        measurement gaps between radio link monitoring measurement,        intra-frequency measurement and inter-frequency measurement        based on configurations of radio link monitoring reference        signals for radio link monitoring and synchronization signal        blocks and/or other reference signals used for intra-frequency        measurements,    -   means for performing measurements including the radio link        monitoring measurement, the intra-frequency measurement and        inter-frequency measurement according to the measurement gap        sharing scheme, and    -   means for changing the measurement gap sharing scheme between        radio link monitoring measurement, intra-frequency measurement        and inter-frequency measurement based on the radio link quality        of a serving cell.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other objects, features, details and advantages will becomemore fully apparent from the following detailed description ofembodiments of the present invention which is to be taken in conjunctionwith the appended drawings, in which:

FIG. 1 shows a UE according to an embodiment of the present invention,and

FIG. 2 shows a flowchart of a procedure carried out by a UE according toan embodiment of the present invention.

DETAILED DESCRIPTION OF EMBODIMENTS

In the following, description will be made to embodiments of the presentinvention. It is to be understood, however, that the description isgiven by way of example only, and that the described embodiments are byno means to be understood as limiting the present invention thereto.

Before describing embodiments, however, the problem underlying thepresent application is described in some more detail.

As described above, using measurement gap for RLM is a new issue in NR.Moreover, in NR the intra-frequency RRM measurement may also rely ongaps.

In RAN4#84bis, it is already agreed that measurement gaps will be sharedbetween intra- and inter-frequency measurements, with the sharing factorconfigurable by the network.

Thus, the problem to be solved is how to share the gaps when RLM is alsobased on gaps and the limited number of gaps needs to be shared formultiple purposes: intra-frequency and inter-frequency measurements andRLM measurements.

In LTE, in order to allow timely recovery when the radio link qualitygets better, the RLM monitoring requirement is always based on non-DRXonce the Qout message is sent to upper layers (RRC), even when UE is inDRX (UE monitoring requirement in DRX is more relaxed compared to non-DRrequirement to enable power saving).

This is derivable from chapter 7.6.2.2 of TS 36.133 (V15.0.0 (2017-09)),for example:

“7.6.2.2 Minimum requirement when DRX is used

When DRX is used the Q_(out) evaluation period(T_(Evaluate_)Q_(out_DRX)) and the Q_(in) evaluation period(T_(Evaluate_)Q_(in_DRx)) specified in Table 7.6.2.2-1 will be used.

When higher-layer signalling indicates certain subframes for restrictedradio link monitoring, the Q_(out) evaluation period(T_(Evaluate_)Q_(out_DRX)) and the Q_(in) evaluation period(T_(Evaluate_)Q_(in_DRX)) specified in Table 7.6.2.2-2 will be used.

When eDRX_CONN cycle is used, the Q_(out) evaluation period(T_(Evaluate_)Q_(out_DRX)) and the Q_(in) evaluation period(T_(Evaluate_)Q_(in_DRX)) specified in Table 7.6.2.2-3 will be used.

When the UE creates autonomous gaps for identification the CGI of anE-UTRA intra-frequency cell or an E-UTRA inter-frequency cell and whenhigher-layer signalling indicates certain subframes for restricted radiolink monitoring, the UE shall also perform radio link monitoring. Inthis case, the Q_(out) evaluation period (T_(Evaluate_)Q_(out_DRX)) andthe Q_(in) evaluation period (T_(Evaluate_)Q_(in_DRX)) specified inTable 7.6.2.2-2 will be used^(Note 1). (Note 1: This RLM requirementdoes not need to be tested.)

When the downlink radio link quality of the PCell or PSCell estimatedover the last T_(Evaluate_)Q_(out_DRX) [s] period becomes worse than thethreshold Q_(out), Layer 1 of the UE shall send out-of-sync indicationfor the PCell or PSCell to the higher layers withinT_(Evaluate_)Q_(out_DRX) [S] evaluation period. A Layer 3 filter shallbe applied to the out-of-sync indications as specified in TS 36.331.

When the downlink radio link quality of the PCell or PSCell estimatedover the last T_(Evaluate_)Q_(in_DRX) [s] period becomes better than thethreshold Q_(in), Layer 1 of the UE shall send in-sync indications forthe PCell or PSCell to the higher layers within T_(Evaluate_)Q_(in_DRX)[s] evaluation period. A L3 filter shall be applied to the in-syncindications as specified in TS 36.331.

The out-of-sync and in-sync evaluations of the PCell or PSCell shall beperformed as specified in clause 4.2.1 in 3GPP TS 36.213. When DRX isused, two successive indications from Layer 1 shall be separated by atleast max(10 ms, DRX_cycle_length). When the UE is configured with dualconnectivity, then two successive indications from Layer 1 shall beseparated by at least max(10 ms, MCG_DRX_cycle_length) for PCell and byat least max(10 ms, SCG_DRX_cycle_length) for PSCell. When eDRX_CONN isused, two successive indications from Layer 1 shall be separated by atleast max(10 ms, eDRX_CONN cycle length).

Upon start of T310 timer or T313 timer as specified in clause 5.3.11 inTS 36.331, the UE shall monitor the link of PCell or PSCell for recoveryusing the evaluation period and Layer 1 indication intervalcorresponding to the non-DRX mode until the expiry or stop of T310 timeror T313 timer.

The transmitter power of the UE shall be turned off within 40 ms afterexpiry of T310 timer and the transmitter power of PSCell if configuredshall be turned off within 40 ms after expiry of T313 timer as specifiedin clause 5.3.11 in TS 36.331. The UE shall not perform LBT procedure onany of FS3 SCells after the expiry of T310.”

Embodiments of the present invention aim to enable sharing measurementgaps for RLM measurements.

In the following, a general overview of an embodiment of the presentinvention is described by referring to FIGS. 1 and 2 .

In particular, FIG. 1 shows a UE 1 as an example for an apparatusaccording to the present embodiment. The UE 1 comprises at least oneprocessor 11 and at least one memory 12 including computer program code.The at least one processor 11, with the at least one memory 12 and thecomputer program code, is arranged to cause the apparatus at least togenerate a measurement gap sharing scheme by sharing measurement gapsbetween radio link monitoring measurement, intra-frequency measurementand inter-frequency measurement based on configurations of radio linkmonitoring reference signals for radio link monitoring andsynchronization signal blocks and/or other reference signals used forintra-frequency measurements, and perform measurements including theradio link monitoring measurement, the intra-frequency measurement andinter-frequency measurement according to the measurement gap sharingscheme.

In other words, by referring to the flowchart shown in FIG. 2 , in stepS1, a measurement gap sharing scheme is generated by sharing measurementgaps between radio link monitoring measurement, intra-frequencymeasurement and inter-frequency measurement based on configurations ofradio link monitoring reference signals for radio link monitoring andsynchronization signal blocks and/or other reference signals used forintra-frequency measurements. In step S2, measurements including theradio link monitoring measurement, the intra-frequency measurement andinter-frequency measurement are performed according to the measurementgap sharing scheme.

Thus, according to embodiments of the present invention, a measurementsharing scheme is provided in which measurement gaps are shared by theradio link monitoring (RLM) measurement and the intra-frequencymeasurement. That is, each measurement gap is used by both the radiolink monitoring measurement and the intra-frequency measurement. In thisway, a high number of measurement gaps can be used for two kinds ofmeasurements simultaneously, so that the available measurement gaps canbe used efficiently.

The measurement gaps that are not shared by the RLM and intra-frequencymeasurements may be used by the inter-frequency measurement. In otherwords, the measurement gaps may be configured such that those gaps thatare not used for the inter-frequency measurement are shared by the RLMand intra-frequency measurements.

Furthermore, the measurement gap sharing scheme between radio linkmonitoring measurement, intra-frequency measurement and inter-frequencymeasurement may be changed based on the radio link quality of a servingcell.

The UE 1 may further comprise input/output (I/O) units or functions(interfaces) 13 connected to the processor 11. In particular, the I/Ounits or functions 13 may comprise a receiver/transmitter unit.

It is noted that the SSB (synchronization signal block) transmitsPrimary Synchronization Signals (PSS) and Secondary SynchronizationSignals (SSS) together with the Physical Broadcast Channel (PBCH). Theblocks are transmitted per slot at a fixed slot location at regularintervals.

Intra-frequency measurements are measurements at the downlink carrierfrequency(ies) of the serving cell(s).

Inter-frequency measurements are measurements at frequencies that differfrom any of the downlink carrier frequency(ies) of the serving cell(s).

Moreover, RLM measurement is performed on RLM reference signals, whichcan be configured as SSB or other reference signal. Thus, it is notedthat embodiments of the present application are not restricted to onlySSB based RLM. Intra-frequency measurement can be also configured to bebased on SSB or other reference signal, but the signals used for RLM andintra-frequency measurement are configured independently.

In the following, some more details of embodiments of the presentinvention are described.

According to the detailed embodiments, a measurement gap sharing schemeto allow reasonable measurement performance for intra-frequency,inter-frequency and RLM is proposed. It includes the followingprinciples.

First, the gap sharing aspect is described:

If SSBs for RLM and intra-frequency measurement are same, or SSBs forone purpose is a subset of SSBs for the other (i.e., the SSBs orreference signals for one of the RLM measurement and the intra-frequencymeasurement are on the same carrier frequency and can be measured with asingle measurement gap pattern), the same gap is used for both purposes,and same measurement requirement apply to both.

If SSBs for RLM and intra-frequency measurement are on different carrierfrequencies (but the union of the SSBs for RLM and intra-frequencymeasurement can be covered by a single gap pattern), RLM andintra-frequency measurement would equally share the gaps not used forinter-frequency measurement. This means the measurement performance willbe scaled by a factor of 2.

In other words, since the shared measurement gaps can be used by bothRLM and intra-frequency measurements, the number of gaps used for thetwo kinds of measurements is reduced.

Once L1 indicates that out-of-sync is detected (e.g., when detected thatthe link quality is below a certain threshold (Qout)), the following iscarried out.

In both cases described above, when UE L1 indicates out-of-sync and theL3 timer for out-of-sync (which is called T310 in LTE) is started, thegap 5 sharing among intra-frequency, inter-frequency and RLM is changedsuch that more gaps are used for RLM. One example is that all gaps areused for RLM measurement. Another example is that the maximum allowedgap sharing for intra-frequency measurement is used, and the exactnetwork configuration is ignored.

In one approach, such gap sharing behaviour could be networkconfigurable while in another approach it could be fixed UE behaviour.

Alternatively, the all gap sharing is cancelled once out-of-sync isdetected—even before L3 timer is started. Such alternative could even benetwork configurable.

That is, in other words, when out-of-sync is detected, no gap sharing isapplied and only RLM measurements are carried out in all available gaps.

In one aspect, the UE could even trigger reporting to the network oncesuch event happens on UE side (out-of-sync is detected and gap sharingrule is changed). This would enable network to perform possible actionsif needed.

According to a further embodiment, it may be detected that the linkquality is not sufficient by determining whether a link quality is belowa certain threshold. That is, for example the UE 1 monitors the linkquality in L1, and if the link quality is below a certain threshold(e.g., Qout), L1 will indicate out-of-sync to L3.

Moreover, the UE may, when, after the measurement gap scheme has beenchanged due to a low radio link quality it is detected that the radiolink quality is recovered, return to the measurement gap scheme whichwas applied before detecting the low radio link quality.

For example, when, after detecting that the link quality is below thecertain threshold, it is detected that the link quality exceeds anotherthreshold (e.g. Qin) which is higher than the certain threshold fordetermining the link quality is not sufficient, the UE may consider thelink as recovered. Then, the original measurement gap sharing scheme canbe applied again, which was applied before a problem in the radio linkquality was detected. This determination may also be performed by usinga timer which is started in L3 after the out-of-sync was received fromL1.

Moreover, according to some embodiments of the present invention, thechange of the gap sharing scheme when radio link quality changes may benetwork configurable.

Thus, the proposed scheme allows sharing a single measurement gappattern for intra-frequency, inter-frequency and RLM measurement. RLMspecific gap can be avoided.

Moreover, the re-sharing of gaps with more gap used for RLM whenout-of-sync timer starts can allow timely link recovery, as otherwise UEmay not be able to timely detect the link recovery due to insufficientmeasurement opportunity.

The invention is not limited to the specific embodiments describedabove, and various modifications are possible.

For example, in the above embodiments, the gap sharing scheme wasdescribed for NR. However, the scheme can be applied to any radiotechnique, as along as the gap sharing scheme can be configured based onsynchronization signal blocks. In particular, the scheme may also beapplied in LTE.

In general, various embodiments of the UE can include, but are notlimited to, mobile stations, cellular telephones, personal digitalassistants (PDAs) having wireless communication capabilities, portablecomputers having wireless communication capabilities, image capturedevices such as digital cameras having wireless communicationcapabilities, gaming devices having wireless communication capabilities,music storage and playback appliances having wireless communicationcapabilities, Internet appliances permitting wireless Internet accessand browsing, as well as portable units or terminals that incorporatecombinations of such functions.

The memory 12 may be of any type suitable to the local technicalenvironment and may be implemented using any suitable data storagetechnology, such as semiconductor based memory devices, magnetic memorydevices and systems, optical memory devices and systems, fixed memoryand removable memory. The processor 11 may be of any type suitable tothe local technical environment, and may include one or more ofgeneral-purpose computers, special purpose computers, microprocessors,digital signal processors (DSPs) and processors based on a multi coreprocessor architecture, as non-limiting examples.

Further, as used in this application, the term “circuitry” refers to allof the following:

(a) hardware-only circuit implementations (such as implementations inonly analog and/or digital circuitry) and

(b) to combinations of circuits and software (and/or firmware), such as(as applicable): (i) to a combination of processor(s) or (ii) toportions of processor(s)/software (including digital signalprocessor(s)), software, and memory(ies) that work together to cause anapparatus, such as a mobile phone or server, to perform variousfunctions) and

(c) to circuits, such as microprocessor(s) or a portion of amicroprocessor(s), that require software or firmware for operation, evenif the software or firmware is not physically present.

This definition of “circuitry” applies to all uses of this term in thisapplication, including in any claims. As a further example, as used inthis application, the term “circuitry” would also cover animplementation of merely a processor (or multiple processors) or portionof a processor and its (or their) accompanying software and/or firmware.The term “circuitry” would also cover, for example and if applicable tothe particular claim element, a baseband integrated circuit orapplications processor integrated circuit for a mobile phone or asimilar integrated circuit in server, a cellular network device, orother network device.

It is to be understood that the above description is illustrative of theinvention and is not to be construed as limiting the invention. Variousmodifications and applications may occur to those skilled in the artwithout departing from the true spirit and scope of the invention asdefined by the appended claims.

What is claimed is:
 1. An apparatus, comprising at least one processor,at least one memory including computer program code, and the at leastone processor, with the computer program code, being arranged to causethe apparatus, when run on the at least one processor, to at least:generate a gap sharing scheme based on a configuration of radio linkmonitoring reference signals for a radio link monitoring measurement anda configuration of synchronization signal blocks and/or other referencesignals used for an intra-frequency measurement, wherein the gap sharingscheme is determined based on whether a subset of the synchronizedsignal blocks and/or the other reference signals is a subset of theradio link monitoring reference signals; and perform measurementsincluding the radio link monitoring measurement, the intra-frequencymeasurement and the inter-frequency measurement based on the gap sharingscheme.
 2. The apparatus according claim 1, wherein the gap sharingscheme is generated such that the same measurement gaps are used for theradio link monitoring measurement and the intra-frequency measurement,if the radio link monitoring reference signals and the synchronizationsignal blocks and/or the other reference signals are on the same carrierfrequency.
 3. The apparatus according to claim 1, wherein the gapsharing scheme is generated such that the radio link monitoringmeasurement and the intra-frequency measurement equally sharemeasurement gaps not used for the inter-frequency measurement, if theradio link monitoring reference signals and the synchronization signalblocks and the other reference signals are on different carrierfrequencies.
 4. The apparatus according to claim 1, wherein the gapsharing scheme is generated such that the measurement gaps shared by theradio link monitoring measurement and the intra-frequency measurementare not used by the inter-frequency measurement.
 5. The apparatusaccording to claim 1, wherein the gap sharing scheme indicates how toshare measurement gaps between the radio link monitoring measurement,the intra-frequency measurement and the inter-frequency measurement. 6.A method comprising: generating a gap sharing scheme based on aconfiguration of radio link monitoring reference signals for a radiolink monitoring measurement and a configuration of synchronizationsignal blocks and/or other reference signals used for an intra-frequencymeasurement, wherein the gap sharing scheme is determined based onwhether a subset of the synchronized signal blocks and/or the otherreference signals is a subset of the radio link monitoring referencesignals; and performing measurements including the radio link monitoringmeasurement, the intra-frequency measurement and the inter-frequencymeasurement according to the gap sharing scheme.
 7. The method accordingclaim 6, wherein the gap sharing scheme is generated such that the samemeasurement gaps are used for the radio link monitoring measurement andthe intra-frequency measurement, if the radio link monitoring referencesignals and the synchronization signal blocks and/or other referencesignals are on the same carrier frequency.
 8. The method according toclaim 6, wherein the gap sharing scheme is generated such that the radiolink monitoring measurement and the intra-frequency measurement equallyshare measurement gaps not used for the inter-frequency measurement, ifthe radio link monitoring reference signals and the synchronizationsignal blocks and/or the other reference signals are on differentcarrier frequencies.
 9. The method according to claim 6, wherein the gapsharing scheme is generated such that the measurement gaps shared by theradio link monitoring measurement and the intra-frequency measurementare not used by the inter-frequency measurement.
 10. The methodaccording to claim 6, wherein the gap sharing scheme indicates how toshare measurement gaps between the radio link monitoring measurement,the intra-frequency measurement and the inter-frequency measurement. 11.A non-transitory computer-readable storage medium comprisinginstructions stored thereon that, when executed by at least oneprocessor, are configured to cause a computing system to: generate ameasurement gap sharing scheme based on a configuration of radio linkmonitoring reference signals for a radio link monitoring and aconfiguration of synchronization signal blocks and/or other referencesignals used for an intra-frequency measurement, wherein the gap sharingscheme is determined based on whether a subset of the synchronizedsignal blocks and/or the other reference signals is a subset of theradio link monitoring reference signals; and performing measurementsincluding the radio link monitoring measurement, the intra-frequencymeasurement and the inter-frequency measurement according to the gapsharing scheme.
 12. The non-transitory computer-readable storage mediumaccording claim 11, wherein the measurement gap sharing scheme isgenerated such that the same measurement gaps are used for the radiolink monitoring measurement and the intra-frequency measurement, if thesynchronization signal blocks and the other reference signals are on thesame carrier frequency.
 13. The non-transitory computer-readable storagemedium according claim 11, wherein the measurement gap sharing scheme isgenerated such that the radio link monitoring measurement and theintra-frequency measurement equally share measurement gaps not used forthe inter-frequency measurement, if the radio link monitoring referencesignals and the synchronization signal blocks and the other referencesignals are on different carrier frequencies.
 14. The non-transitorycomputer-readable storage medium according to claim 11, wherein themeasurement gap sharing scheme is generated such that the measurementgaps shared by the radio link monitoring measurement and theintra-frequency measurement are not used by the inter-frequencymeasurement.
 15. The non-transitory computer-readable storage mediumaccording to claim 11, wherein the gap sharing scheme indicates how toshare measurement gaps between the radio link monitoring measurement,the intra-frequency measurement and the inter-frequency measurement.